crash/crash-sles9-quirk.patch

From: Bernhard Walle <bwalle@suse.de>
Subject: [PATCH] Add quirk for SLES9 LKCD header
Upstream: never

On SLES9, we have a different header on IA64:

    SLES 10:

    typedef struct __dump_header_asm {
            uint64_t            dha_magic_number;
            uint32_t            dha_version;
            uint32_t            dha_header_size;
            uint64_t            dha_pt_regs;
            struct pt_regs      dha_regs;
            uint64_t            dha_rnat;
            uint64_t            dha_pfs;
            uint64_t            dha_bspstore;
            uint32_t	        dha_smp_num_cpus;
            uint32_t	        dha_dumping_cpu;
            struct pt_regs	dha_smp_regs[NR_CPUS];
            uint64_t	        dha_smp_current_task[NR_CPUS];
            uint64_t	        dha_stack[NR_CPUS];
            uint64_t	        dha_stack_ptr[NR_CPUS];
            uint64_t            dha_kernel_addr;
    } __attribute__((packed)) dump_header_asm_t;

    SLES 9:
    typedef struct __dump_header_asm {
            uint64_t            dha_magic_number;
            uint32_t            dha_version;
            uint32_t            dha_header_size;
            uint64_t            dha_kernel_addr;
            uint64_t            dha_pt_regs;
            struct pt_regs      dha_regs;
            uint64_t            dha_rnat;
            uint64_t            dha_pfs;
            uint64_t            dha_bspstore;
            uint32_t	        dha_smp_num_cpus;
            uint32_t	        dha_dumping_cpu;	
            struct pt_regs	dha_smp_regs[NR_CPUS];
            uint64_t	        dha_smp_current_task[NR_CPUS];
            uint64_t	        dha_stack[NR_CPUS];
            uint64_t	        dha_stack_ptr[NR_CPUS];
    } __attribute__((packed)) dump_header_asm_t;

That patch tries to guess if it's a SLES 9 or a SLES 10 header
at runtime.


Signed-off-by: Bernhard Walle <bwalle@suse.de>

---
 lkcd_v8.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

--- a/lkcd_v8.c
+++ b/lkcd_v8.c
@@ -130,6 +130,17 @@ lkcd_dump_init_v8_arch(dump_header_t *dh
 		goto err;
 	}
 
+#if IA64
+	/* SLES9 on IA64? */
+	if ( *((uint64_t *)(hdr_buf + hdr_size - sizeof(uint64_t))) <= NR_CPUS) {
+		uint64_t kernel_addr;
+		kernel_addr = ((dump_header_asm_t *)hdr_buf)->dha_pt_regs;
+		memmove(hdr_buf + offsetof(dump_header_asm_t, dha_pt_regs),
+				hdr_buf + offsetof(dump_header_asm_t, dha_regs),
+				hdr_size - offsetof(dump_header_asm_t, dha_regs));
+		*((uint64_t *)(hdr_buf + hdr_size - sizeof(uint64_t))) = kernel_addr;
+	}
+#endif
 
 	/*
          * Though we have KL_NR_CPUS is 128, the header size is different